Jon Hamm To Join 'The Simpsons'

The actor will lead a sting operation against Joe Mantegna's character Fat Tony on the upcoming episode.

The Simpsons' executive producer Al Jean tells EW.com, "Jon's a gruff FBI man... He has no patience for Homer."

And Hamm's Simpsons debut might lead to more appearances on the show - because the Mad Men star was a big hit. Jean adds, "You gave him one note and he immediately did 12 great things with it. He was really funny. And handsome. He had it all."